A new approach to an old question: How do we actually cooperate?

In the animal kingdom, birds band together to ward off predators, and honeybees work collectively to benefit the entire hive. Animals of the human persuasion can act cooperatively too, at times, though this behavior is not ...

Sibling rivalries lead to friendly finches

A new study has revealed that growing up with lots of siblings – and fighting over food – makes zebra finches more sociable in later life. In contrast, finches with fewer siblings become pickier about who they hang out ...

Culture may explain why brains have become bigger

A theory called the cultural brain hypothesis could explain extraordinary increases in brain size in humans and other animals over the last few million years, according to a study published in PLOS Computational Biology by ...

'Bickering' flies make evolutionary point

When a male fruit fly gets aggressive, he rears up on his back four legs and batters his foe with his front pair. Neither fly seems particularly damaged by the encounter, but their subsequent actions are telling about the ...

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